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91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* JSON serialization and deserialization operations.
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*/
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#ifndef js_JSON_h
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#define js_JSON_h
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#include <stdint.h> // uint32_t
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#include "jstypes.h" // JS_PUBLIC_API
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#include "js/TypeDecls.h"
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using JSONWriteCallback = bool (*)(const char16_t* buf, uint32_t len,
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void* data);
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/**
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* Performs the JSON.stringify operation, as specified by ECMAScript, except
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* writing stringified data by repeated calls of |callback|, with each such
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* call passed |data| as argument.
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*/
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extern JS_PUBLIC_API bool JS_Stringify(JSContext* cx,
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JS::MutableHandle<JS::Value> value,
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JS::Handle<JSObject*> replacer,
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JS::Handle<JS::Value> space,
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JSONWriteCallback callback, void* data);
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namespace JS {
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/**
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* An API akin to JS_Stringify but with the goal of not having observable
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* side-effects when the stringification is performed. This means it does not
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* allow a replacer or a custom space and has the following constraints on its
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* input:
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*
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* 1) The input must be a plain object or array, not an abitrary value.
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* 2) Every value in the graph reached by the algorithm starting with this
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* object must be one of the following: null, undefined, a string (NOT a
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* string object!), a boolean, a finite number (i.e. no NaN or Infinity or
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* -Infinity), a plain object with no accessor properties, or an Array with
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* no holes.
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*
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* The actual behavior differs from JS_Stringify only in asserting the above and
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* NOT attempting to get the "toJSON" property from things, since that could
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* clearly have side-effects.
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*/
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extern JS_PUBLIC_API bool ToJSONMaybeSafely(JSContext* cx,
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JS::Handle<JSObject*> input,
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JSONWriteCallback callback,
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void* data);
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} /* namespace JS */
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/**
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* Performs the JSON.parse operation as specified by ECMAScript.
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*/
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extern JS_PUBLIC_API bool JS_ParseJSON(JSContext* cx, const char16_t* chars,
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uint32_t len,
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JS::MutableHandle<JS::Value> vp);
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/**
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* Performs the JSON.parse operation as specified by ECMAScript.
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*/
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extern JS_PUBLIC_API bool JS_ParseJSON(JSContext* cx, JS::Handle<JSString*> str,
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JS::MutableHandle<JS::Value> vp);
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/**
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* Performs the JSON.parse operation as specified by ECMAScript, using the
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* given |reviver| argument as the corresponding optional argument to that
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* function.
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*/
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extern JS_PUBLIC_API bool JS_ParseJSONWithReviver(
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JSContext* cx, const char16_t* chars, uint32_t len,
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JS::Handle<JS::Value> reviver, JS::MutableHandle<JS::Value> vp);
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/**
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* Performs the JSON.parse operation as specified by ECMAScript, using the
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* given |reviver| argument as the corresponding optional argument to that
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* function.
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*/
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extern JS_PUBLIC_API bool JS_ParseJSONWithReviver(
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JSContext* cx, JS::Handle<JSString*> str, JS::Handle<JS::Value> reviver,
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JS::MutableHandle<JS::Value> vp);
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#endif /* js_JSON_h */
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